Re: [Boost-bugs] [Boost C++ Libraries] #7666: Boost Thread SIGSEGV on join() when -D_GLIBCXX_DEBUG is used

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7666: Boost Thread SIGSEGV on join() when -D_GLIBCXX_DEBUG is used
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-09-18 11:06:08

#7666: Boost Thread SIGSEGV on join() when -D_GLIBCXX_DEBUG is used
-------------------------------------+-------------------------------------
  Reporter:  Antonio Di Monaco       |      Owner:  viboes
  <tony@…>                           |     Status:  assigned
      Type:  Bugs                    |  Component:  thread
 Milestone:  Boost 1.55.0            |   Severity:  Problem
   Version:  Boost 1.52.0            |   Keywords:  thread SIGSEGV C++11
Resolution:                          |  -D_GLIBCXX_DEBUG
-------------------------------------+-------------------------------------

Comment (by viboes):

 Replying to [comment:17 Antonio Di Monaco <tony@…>]:
 > Maybe there's something here. I applied the patch, I started with a full
 run, just to be sure that SIGSEGV was still present, and then I printed
 out notify variable.
 >
 >

 >
 > Breakpoint 1, boost::detail::thread_data_base::~thread_data_base (
 >     this=0x243330, __in_chrg=<optimized out>)
 >     at libs\thread\src\win32\thread.cpp:40
 > 40          thread_data_base::~thread_data_base()
 > (gdb) s
 > 42              for (notify_list_t::iterator i = notify.begin(), e =
 notify.end(
 > );
 > (gdb) p notify
 > $1 = std::vector of length 0, capacity 0 = {Cannot access memory at
 address 0x0
 > (gdb) p async_states_
 > $2 = std::vector of length 0, capacity 0
 > }}}

 Could you try to see when the access to address 0x0 is done?
 Could you do a step on notify.begin()?

 > Seems that internal buffer of notify vector has been lost. Move
 operation somewhere??? (just guessing...)

 I don't think so. This class is not moved.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7666#comment:18>
Boost C++ Libraries <http://www.boost.org/>
Boost provides free peer-reviewed portable C++ source libraries.